I'm doing a custom switch clix for my zombie doom, basically making it so I can put unthinkable doom on the base for fun. I need a brown based switch click though to kinda match the zombie dial, and no I don't want to use another zombie, them suckers expensive. Any suggestions would be helpful.

Zombies were the only ones that were brown base like that. The closest you'll come is Yellow from Teen Titans chases. Those are fairly cheap

There's the New Mutants with the desert bases I found as well. I think they may work.

Why not just paint it the color you want?

Oh I plan to paint or. Just it's easier to make a brown thing into another brown than it is to make a black or white or grey thing brown. Just saving myself a few coats and hours if I can

Makes sense